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We present locking of two modes in GaAs/AlGaAs single-quantum-well quasi-stadium laser diodes and unidirectional emission from InGaAsP multiple-quantum-well quasi-stadium laser diodes
Mode switching operation of multi-electrode strained InGaAsP multiple-quantum-well quasi-stadium laser diodes is reported. Far-field patterns exhibit highly directional emission along the laser cavity axis for current injection at the axis electrode and highly directional emission at angles plusmn19deg from the cavity axis for current injection at the ring electrode
The frequency modulation characteristics of 1.3 ?m InGaAsP DFB BH lasers are measured when the bias current is slightly modulated by a sinusoidal waveform. Two deviations from the prediction by the rate equations are observed. One is that the phase difference between the frequency deviation and the modulation current approaches 180? below the relaxation resonance, and the other is that the ratio of...
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